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llvm-mirror/test/Linker/link-flags.ll
Jin Lin 673715d427 Preserve the lexical order for global variables during llvm-link merge
The order of global variables is generated in the order of recursively materializing variables if the global variable has the attribute of hasLocalLinkage or hasLinkOnceLinkage during the module merging. In practice, it is often the exact reverse of source order. This new order may cause performance regression.

The change is to preserve the original lexical order for global variables.

Reviewed By: jdoerfert, dexonsmith

Differential Revision: https://reviews.llvm.org/D94202
2021-04-26 10:11:34 -07:00

26 lines
1.2 KiB
LLVM

; RUN: llvm-link -S %S/Inputs/linkage.b.ll %S/Inputs/linkage.c.ll | FileCheck %s -check-prefix=B -check-prefix=C -check-prefix=CU
; RUN: llvm-link -S -only-needed %S/Inputs/linkage.b.ll %S/Inputs/linkage.c.ll | FileCheck %s -check-prefix=B -check-prefix=C -check-prefix=CN
; RUN: llvm-link -S -internalize %S/Inputs/linkage.b.ll %S/Inputs/linkage.c.ll | FileCheck %s -check-prefix=B -check-prefix=CI
; RUN: llvm-link -S -internalize -only-needed %S/Inputs/linkage.b.ll %S/Inputs/linkage.c.ll | FileCheck %s -check-prefix=B -check-prefix=CN
; RUN: llvm-link -S -internalize %S/Inputs/linkage.b.ll %S/Inputs/linkage.c.ll %S/Inputs/linkage.d.ll | FileCheck %s -check-prefix=B -check-prefix=DI
C-LABEL: @X = global i32 5
CI-LABEL: @X = internal global i32 5
CU-LABEL:@U = global i32 6
CI-LABEL:@U = internal global i32 6
CN-NOT:@U
DI-LABEL: @llvm.used = appending global [2 x i8*] [i8* @Y, i8* bitcast (i64 ()* @foo to i8*)], section "llvm.metadata"
DI-LABEL: @Y = global i8 42
B-LABEL: define void @bar() {
C-LABEL: define i32 @foo()
CI-LABEL: define internal i32 @foo()
CU-LABEL:define i32 @unused() {
CI-LABEL:define internal i32 @unused() {
CN-NOT:@unused()
DI-LABEL: define internal i32 @foo.6()
DI-LABEL: define i64 @foo()